thanks for your advice buddy ,
I would say dumping the clipping from the bag would be an inconvenient if you have a large garden
you have to walk away and stop the mower for safty , then the blade cluth would be a nice feature in this case ?
Briggs engine looks dominated DIY market in US,
but 450-675 are side valve engine , not a OHV,
I don't kown why People like this kind of things,
Only for brand ?